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HVAC Ohming Compressor Windings Posted by: DrZarkloff
Video duration: 262 seconds Global video hits: 80377 I show how to ohm compressor windings to see if the compressor checks out electrically. Related: drzarkloff, starkloff, hvacr, betterthanbob, air, conditioning, hvac, compressor, ohm Display Video Comments | Hide Video Comments | Add Comment |
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HVAC Wiring Diagrams 101 Posted by: DrZarkloff
Video duration: 223 seconds Global video hits: 78012 This is a basic run down about wiring diagrams. The music was played and composed by Champagne Millionaire. You can check him out at: profile.myspace.com Related: drzarkloff, starkloff, hvacr, betterthanbob, air, conditioning, hvac, wiring, diagrams Display Video Comments | Hide Video Comments | Add Comment Latest comments made on this video:
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HVAC recovery system hook-up and hose purge Posted by: DrZarkloff
Video duration: 458 seconds Global video hits: 90286 I show how to connect and purge hoses when recovering refrigerant from an a/c system. Please do not be confused by the R-410A gauges. My R-22 gauges were broken and I was forced to use my R-410A gauges. Related: drzarkloff, starkloff, hvacr, betterthanbob, air, conditioning, hvac, recovery, unit, hose, purge Display Video Comments | Hide Video Comments | Add Comment Latest comments made on this video:
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HVAC (Coil Cleaning) Posted by: DrZarkloff
Video duration: 596 seconds Global video hits: 186448 This is a quick lesson in how to clean air conditioning coils. It is a very worthwhile video to watch. Pay close attention. Related: drzarkloff, starkloff, james, allen, air, conditioning, conditioner, coil, cleaning, evaporator, condensor, save, money, hvacr Display Video Comments | Hide Video Comments | Add Comment Latest comments made on this video:
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HVAC BTU and Ton Posted by: DrZarkloff
Video duration: 217 seconds Global video hits: 12057 I show how to calculate the tonnage raging based on the BTU information on a data label. Related: drzarkloff, starkloff, hvac, tonnage, btu, data, label Display Video Comments | Hide Video Comments | Add Comment Latest comments made on this video:
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HVAC gauges Posted by: DrZarkloff
Video duration: 368 seconds Global video hits: 61078 This is a tutorial about air conditioning gauges. Related: starkloff, james, allen, air, conditioning, guages, psig, hg Display Video Comments | Hide Video Comments | Add Comment Latest comments made on this video:
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HVAC Blower not working, troubleshooting Fan Control board Posted by: mikie2501
Video duration: 493 seconds Global video hits: 94472 A quick easy way to trouble shoot most fan control boards to determine if the blower motor is working or if it is the control board Related: blower, motor, fan, control, board, hvac, not, working, troubleshooting, no, air, airflow Display Video Comments | Hide Video Comments | Add Comment Latest comments made on this video:
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HVAC Troubleshooting 1 Posted by: DrZarkloff
Video duration: 524 seconds Global video hits: 39687 This is the first troubleshooting video. Related: drzarkloff, starkloff, hvac, troubleshooting, gauges Display Video Comments | Hide Video Comments | Add Comment Latest comments made on this video:
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HVAC compressor change Posted by: DrZarkloff
Video duration: 348 seconds Global video hits: 57229 I tried to make this a step by step how to change a compressor video. Darn batteries in my camera went dead in the middle of the show. Maybe next time. Related: hvac, starkloff, drzarkloff, air, conditioning Display Video Comments | Hide Video Comments | Add Comment Latest comments made on this video:
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Latest comments made on this video:
By: jesusnagstring. on 20 Aug 10, 17:18:53
@Nspect I was a HVAC tech for over 10yrs and still work on the side for myself as a tech. I always ohm out the compressor at the terminals. As he says this eliminates any false readings through the wiring. As for the terminal blowing knocking your hand into a live circuit you should NEVER have the power on when ohming a compressor at the terminals in the first place. You can also do a continuity check to see if the compressor is shorted to ground.
By: Nspect. on 16 Aug 10, 03:05:04
I agree IndieBraah, never do directly at the compressor if it blew out could kick your hand into a live circuit or hurt you.........
By: DrZarkloff. on 15 Aug 10, 16:59:35
@IndieBraah I've never had it happen to me. I like to ohm the compressor at the terminal block just in case there's a problem with any of the wires.
By: DaVeHoLpRiDe. on 15 Aug 10, 12:04:51
Thanks for this video mate it helped alot
By: ppwalk05. on 14 Aug 10, 21:09:19
@deyenak1 that is if you are doing a hipot test using a megohmmeter (resistance to ground using a high voltage dc source).
By: IndieBraah. on 14 Aug 10, 18:39:02
DrZarkloff I have a question. In the video you pull the compressor leads off of the terminals directly to ohm them out. I have been always told that you should never do this unless the charge is pulled out of the system because, the terminals can shoot out and blow your hand off while the system is under pressure. I'm only a 4? year tech from So.Cal. Just wondering if that is a myth or true what they say?
By: DrZarkloff. on 12 Aug 10, 01:59:25
@george6964 The continuity setting is used to read ohms on the Fieldpiece HS33. The Fieldpiece HS36 has separate settings for each.
By: george6964. on 10 Aug 10, 22:52:20
on ohming compressor i noticed you have your meter set to continuity to to ohms does it matter
By: douglas787. on 30 Jul 10, 23:33:26
@baydestrian84 A shock from a 440v unit is no freekin joke. Could cause death or at the least serious burns. I use one of those non contact probes just to be sure the power is off. I almost shocked myself on a attic air handler the other day on a multi unit building. I shut off the wrong breaker, good thing I checked with the probe before putting my hands in there.
By: DrZarkloff. on 24 Jul 10, 14:14:45
@baydestrian84 Yeowch! Amen to that.
By: baydestrian84. on 24 Jul 10, 06:28:06
yes i thought i turned off the power two days ago on a three phase 460v packeg unit.and the next thang i no i was stuck to the unit and yelling at the top of my lungs..not fun thank god i have some waight on my bones cus i was on able to pull my hands off.. scared the shi_ out of me. so pleas all tecs and installers dont trust outher pepoles work or word check for voltege..thnx
By: DrZarkloff. on 14 Jul 10, 23:10:37
@robertcyders I'm not sure. You could test the scroll compressor in the same manner as long as it's single phase. Three phase compressor should ohm the same between each winding.
By: DrZarkloff. on 14 Jul 10, 23:08:31
@2170509 The valve could have got stuck if a piece of trash clogged the orifice. Sometimes, an oil flood back can simulate a stuck valve. By the way, I prefer Sporlan expansion valves. Enough said.
By: robertcyders. on 13 Jul 10, 20:21:40
Look at 1:47 in the video. You have your HS33 Fieldpiece meter set on continuity. You have a tone, a light, and the knob is pointing to this setting. I have the same meter. What should you be reading on ohms on a scroll compressor let's say 4 tons?
By: 2170509. on 10 Jul 10, 20:19:24
Sir, I have installed Petra chiller its expansion valve got stuck 05 to 06 times in two years there is installed Danfoss SS body valve, Please reply what cause of getting stuck the expansion valve. Regards M. Ismail
By: DrZarkloff. on 01 Jul 10, 00:30:07
@juanater2000 It should be running until the indoor temperature reaches the thermostat set point. Your system could be shutting off on high head pressure. Try cleaning the condensing coil.
By: DrZarkloff. on 30 Jun 10, 23:14:22
@deyenak1 I've never known that to happen. I have had a compressor blow out after energising it with power.
By: DrZarkloff. on 30 Jun 10, 23:12:41
@2170509 You should just weigh in the refrigerant charge. Don't be too concerned with the suction pressure unless it's too low and the line is icing up.
By: 2170509. on 30 Jun 10, 19:49:16
Sir, I have installed 1/2 hp compressor Danfoss 134 a in fridge its getting to heated and compressor return came means suction line temp. came at above 20 psi I read in book at 80 Fahrenheit, suction allowable temp 30 to 20 Psi so 20 psi pressure of suction line is it suitable? Please Reply Dr. Zarkloff
By: deyenak1. on 30 Jun 10, 04:18:31
were those compressors under pressure because my teacher say's that checking ohms at the terminals on the compressor might blow out on you. What can you tell me about that
By: juanater2000. on 29 Jun 10, 07:07:09
me again house is 1700sq ft 4 ton unit
By: juanater2000. on 29 Jun 10, 07:04:33
me agail house is 1700sq ft 4ton carrier unit
By: juanater2000. on 29 Jun 10, 07:00:18
Hi i was adjusting my swing setting and wondering my unit runs about 14min on and 14 min off . 100f out side. i know theres alot more to factor in but what do you think about that? would it be more efficent to run on say 10 min ? how long should it run at that outside temp aproxx? thanks
By: tangnatalaga. on 22 Jun 10, 16:50:33
Resistance measurement cannot determine a shorted coil. I mean any type of coil specially the ones in a compressor. Although it can determine an open winding which rarely happens. A ring test can be performed using an oscilloscope and a signal. Even then it is not 100% reliable. I don't even know why some technical books have sections in measuring Resistance in coils. It is useless and a waste of time and may lead to confusion.
By: 2170509. on 18 Jun 10, 16:31:04
Hi, Please make me know, can we charge the gas in the system with gas? when we know TR of the system I am talking about gas quantity in weight I know when the system RFT increase gas quantity also increase but is there available thumb rule when capacity so and so then quantity so and so. Regards